United Security Services

Imperial Service Systems was established in 1973 by Dominic DelSignore. Imperial is one of the largest privately-held janitorial contractors in the nation. Service Magazine has listed Imperial among the top 70 building maintenance companies in the United States. Imperial does over 80 percent of its business in northern Illinois. The company provides such services as strip/refinishing, carpet cleaning, window washing, construction clean ups, upholstery cleaning and day porter/matron services.

Crescent Cleaning Company is a professional cleaning service based in Chicago, IL, offering a range of commercial and residential cleaning solutions. With a focus on quality and customer satisfaction, Crescent Cleaning Company provides efficient and reliable cleaning services to meet the needs of its clients. Generated from their business information

Building Services of America (BSA) works hand-in-hand with various clients including large organizations across the industry spectrum. We take pride in caring for their facilities and complexes to improve our local communities. BSA offers janitorial services, building engineering solutions, maintenance, door staff and concierge solutions, plant sanitation, and carpet cleaning.